Ultrahigh-pressure high-temperature experimental back-pressure valve
A technology of back pressure valve and ultra-high pressure, which is applied in the field of back pressure valve for ultra-high pressure and high temperature experiments, can solve the problems that the back pressure control of displacement experiments cannot be used, the reliability of experimental results is affected, and the displacement experiments cannot be satisfied, and the price is achieved. Low cost, high sensitivity, high temperature and high pressure resistance, corrosion resistance, and the effect of eliminating dead volume
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[0014] The present invention will be further described below in conjunction with accompanying drawing.
[0015] see figure 1 , an ultra-high pressure and high temperature experimental back pressure valve, which is a cylinder, mainly composed of an upper valve body, a lower valve body, an ultra-high pressure gas chamber body, an alloy diaphragm, a horizontal fluid channel, a vertical fluid channel, a central hole, and a valve needle , the alloy diaphragm 4 is located between the upper valve body 1 and the lower valve body 2, and forms a multi-stage combined soft seal 10 with the upper valve body and the lower valve body. There is an ultra-high pressure gas chamber body 3 in the upper valve body, so The ultra-high pressure gas chamber body is connected to the back pressure pipeline end 9, and there is a through hole 11 between the horizontal fluid passage 5 located in the lower valve body 2; the intersection point of the horizontal fluid passage 5 and the vertical fluid passage ...
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